Sentence

めんどりは卵がかえるまで抱く。

めんどりは(たまご)がかえるまで(いだ)く。
The hen sits on her eggs until they hatch.
Sentence

卵がかえる前にひよこの数を数えるな。

(たまご)がかえる(まえ)にひよこの(かず)(かぞ)えるな。
Don't count your chickens before they are hatched.
Sentence

ひよこがかえらぬうちにその数を数えるな。

ひよこがかえらぬうちにその(かず)(かぞ)えるな。
Don't count your chickens before they are hatched.